o:9978 Ispitivanje faznih ravnoteža i karakterizacija legura u sistemu Bi-Cu-Ni / Branislav R. Marković doktorska disertacija Investigation of phase equilibria and characterization of alloys in the Bi-Cu-Ni system : doctoral dissertation sr Fazne ravnoteže u Bi-Cu-Ni ternarnom sistemu proucavane su eksperimentalnim metodama (SEM-EDS, DTA i DSC), kao i analiticki primenom CALPHAD metode. Proracun ravnotežnih faznih dijagrama u Bi-Cu-Ni sistemu izveden je na osnovu optimiziranih termodinamickih parametara za sastavne binarne sisteme i dodatnih termodinamickih parametara, odredenih u ovom radu. Proracunati fazni dijagrami izotermalnih preseka na 300oC, 400oC i 500oC uporedeni su sa eksperimentalnim rezultatima iz literature i ustanovljeno je dobro medusobno slaganje. Definisani su ternarni termodinamicki parametri za tecnu fazu, i BiNi fazu u kojima je uzeta u obzir eksperimentalno potvrdena rastvorljivost bakra u BiNi fazi. Proracunati fazni dijagrami tri vertikalna preseka uporedeni su sa DTA/DSC rezultatima iz ovog rada. Odredene su tvrdoca i elektricna provodljivost kao dopunska karakterizacija legura ispitivanog Bi-Cu-Ni ternarnog sistema. Phase equilibria in the Bi-Cu-Ni ternary system have been studied experimentally using SEM-EDS, DTA and DSC methods, and analytically using CALPHAD method. Calculation of equilibrium phase diagrams of Bi-Cu-Ni system was performed using optimized thermodynamic parameters of the constituent binary systems and additional thermodynamic parameters determined in this study. Calculated isothermal sections at 300oC, 400oC and 500oC were compared with experimental results from the literature and good agreement is found. Ternary thermodynamic parameters for the liquid phase were determined, as well as for the BiNi phase, in which the experimental confirmation of copper solubility in BiNi phase was taken into account. Three calculated vertical sections were compared with the DTA/DSC results from this work. Hardness and electrical conductivity as an additional characterization of the investigated alloys of Bi-Cu-Ni ternary system were determined. Tehnicko-tehnološke nauke - Metalurško inženjerstvo / Technical and technological sciences-Metallurgical engineering Datum odbrane: Bi-Cu-Ni sistem, bezolovni lemovi, fazna ravnoteža, termodinamickomodelovanje, karakterizacija Bi-Cu-Ni system, lead-free solders, phase equilibria, thermodynamicmodeling, characterization yes 46768143 91552101 2156 91552100 46768143 2015-11-05T15:59:04.053Z 45 no 46 mentor Branislav R. Marković 2012 63 mentor Dragana Živković 2012 63 član komisije Dragan Manasijević 2012 63 član komisije Nadežda Talijan 2012 PDF/A (93 lista) 15825576 http://phaidrabg.bg.ac.rs/o:9978 no yes 5 2015-11-05T15:59:04.320Z 70 11 1067197 1067407 1067415 11 1067197 1067407 1067412 Bi-Cu-Ni sistem, bezolovni lemovi, fazna ravnoteža, termodinamickomodelovanje, karakterizacija Bi-Cu-Ni system, lead-free solders, phase equilibria, thermodynamicmodeling, characterization 669 Legure Bi-Cu-Ni 1738 11A40 2012